Wall Street stocks dropped Monday, joining overseas markets in retreating after US President Donald Trump announced tariffs on Canada, Mexico and China.

Trump later modified his weekend tariff announcement, suspending the levies on Mexico for 30 days following talks with his Mexican counterpart.

But all three major US indices still ended the day lower, with the Dow Jones Industrial Average falling 0.3 percent to 44,421.91.

The broad-based S&P 500 fell 0.8 percent to 5,994.57, while the tech-rich Nasdaq Composite Index shed 1.2 percent to 19,391.96.